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04 October 2022 | Story Samkelo Fetile | Photo Supplied
Dr Sevias Guvurio
Dr Sevias Guvuriro.

Dr Sevias Guvuriro from the Faculty of Economic and Management Sciences at the University of the Free State (UFS) is the first UFS candidate to participate in the University of Michigan African Presidential Scholarship (UMAPS) fellowship programme. Dr Guvuriro is also a member of the Future Professoriate Group participating in the Transformation of the Professoriate Programme.  

About the project 

Dr Guvuriro’s main project during his five-month stay at the University of Michigan was on hazardous drinking and economic preferences among urban youth in South Africa. The project recognises that lifestyle behaviours in early life are important drivers of chronic disease later in life, and that harmful use of alcohol is among the main risk factors for non-communicable diseases in the world. According to Dr Guvuriro, persuasive behaviour-change approaches could be useful, especially in the context of developing countries, where the World Health Organisation’s non-communicable diseases ‘Best Buys’ interventions on alcohol use could be ineffective. Behavioural economics and experimental economics techniques could also be beneficial. "With the assistance of my host, Prof Erin Krupka from the University of Michigan School of Information, academics and other staff members, I have made very strong progress in analysing my survey and experimental data on the subject, which I obtained here in South Africa,” said Dr Guvuriro.

Unpacking UMAPS 

UMAPS offers African scholars drawn from across Africa the opportunity to spend five months at the University of Michigan, working and interacting with faculty members who are leaders in their fields. Each year, applications for the fellowship open on 15 August and close on 15 October. The programme started in 2009, hosting a single cohort each year. From 2020, the programme hosted two cohorts of about 15 African scholars each. These scholars are selected annually from an application pool of about 600. 

"It was an amazing experience, one that I wish all of my colleagues in the faculty and the institution at large could have," Dr Guvuriro said. “Other than meeting the faculty staff at the University of Michigan – who are amazing – I got to meet and interact with world leaders in the economics subdiscipline of my interest.” 

He concluded by stating that this is a rare opportunity for scholars, and although competitive, he believes it is worth applying for. “Although I was the first from the UFS to attend, I know that the August to December 2022 cohort has another UFS staff member, which is great. My wish would be for our university to be represented annually.”

News Archive

UFS venture cleans up acid mine drainage
2015-07-06

The system that puts oxygen back into the water.

Photo: Supplied

South Africa is one of the most important mining countries in the world, beginning in the 1870s. Although the mining industry has been responsible for significant development and employment, it pollutes the environment and waters sources. Through the joint effort of a well-known mining company, the University of the Free State, and the Technology Innovation Agency (UFS/TIA) SAENSE Group, a new treatment for Acid Mine Drainage (AMD) has been developed.

The system treats the major contaminants found in acid mining wastewater effectively.  
 
The UFS remediation systems use a reservoir tank into which the AMD is pumped. The water then flows passively (without using energy) to the Barium Carbonate Dispersed Alkaline Substrate (BDAS) system. The metals and anions in the AMD react chemically with the barium carbonate and precipitate (form solids). The solids stay in the tank while the clean water is released.

The efficacy and applicability of the research was demonstrated on site in Belfast, Mpumalanga where the team constructed a pilot plant in July 2014. This patented technology has treated 1 814 400 litres of Acid Mine Drainage to date with an outflow water quality that satisfies the South African National Standards (SANS) 241:2006 & 2011 regulations for drinking water.   

Rohan Posthumus from the (UFS/TIA) SAENSE Group said: “At this stage, we do not recommend that the water should be used as drinking water, but certainly it can lower water usage in mines while finding application in dust suppression of washing processes. The team would like to complete a full characterisation of the final released water. There are currently no toxic by-products formed, and even very basic filtration can make the outflow drinking water.”

Prof Esta van Heerden’s research group from the Department of Microbial, Biochemical, and Food Biotechnology has been working on AMD research for some time, but the development of the BDAS system was started in 2013 by post-doctoral student, Dr Julio Castillo, and his junior researcher, Rohan Posthumus.

The data from the BDAS system have led to two publications in peer-reviewed journals as well as a registered patent.

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